Ok heres the thing out of all the games I have played online i would say 4/5 of them so far could have been a lot more fun had the people acted more mature and not negatively affected the atmosphere of the game.
I play this game for fun, to relax, not to kick someone's ass, make someone rage quit, bring someone down, "own them", whine every mine in ALL chat, go OMG WTF BS everytime i die, say the game is imbalanced, never give credit to the opposing players, tell everyone my teammate sucks, complain the AI sucks... etc etc
Statistically speaking most of you reading have done atleast one or more of the things above, and you should stop, if you feel the urge... stop.. take a deep breath.. rethink.. and say something positive, "nice one" perhaps.
Because you are ruining the game for everyone, including yourselves. It just makes you look like an immature loser everytime. And cussing does NOT make you look tough or badass, mayby you are making up for something you lack IRL ? 
My most enjoyable game was with Frogboy.. right after the patch was released he started a 4v4 custom game and i was one of the lucky ones to get in. Was extremely fun and no one complained, could have gone either way but we ended up winning. Now mayby the people who lost resisted the urge to complain because Frogboy was there, or simply because they had better sportsmenship, i dont know.
The point is, you woudnt act like a jerk face to face as much because you know there are consequences, people know you, recognize you and will point you out to all their peers. Online you can hide behind your computer screens and say whatever you want. But people still know you by your avatar names.
Elitists are even worse, they are there to put other people down, think they are the best because they played beta. And everyone else is a noob.. games been out less than a week so please stfu. You know who you are.
Lastly the rage quitters. NO ONE WANTS TO HEAR YOUR WHINE, really we dont care, in our eyes we played better than you, you are being a sore loser by complaining, and the more you talk the dumber you look. I dont mind people dropping out of games if they know there is no chance to win, but you can be honorable about it, "gg, you guys deserved the win, i'm out!" will do. There is no point camping at your base at the crystal making a 15 minute game last 45.
I ask everyone who has read these online rages to screenshot them (press f12, open paint and paste) then host the picture on websites like www.imageshack.us and send me the link in a private message. I'll be making a collage or mayby even a video quoting the "losers" in their own words.